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D. K. JAGKMAN.

HINGE. No. 320,255. Patented June 16, 1885.

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Fries.

DAVID K. JACKMAN, OF POUGHKEEPSIE, NEV YORK.

HINGE.

SPECIFICATION forming part of Letters Patent No 320,255, dated June 16, 1885.

Application filed February QS, 1385.

To all whom t may concern:

Be it known that I, DM'ID K. JACKMAN, a citizen of the United States, residing at Poughkeepsie, in the county of Dutchess and State of New York, have invented a new and useful hinge for all kinds of castings where a doorandhiugc are required, of which the following is a specification.

Hy invention relates to improvements in east hinges; and the object ol my invention is to produce a hinge that may be cast upon and with the frame and door as a part thereof; and it consists in producing a hinge that can be east upon the door and its frame that requires no fitting nor trimming, but is ready for use when cleaned in the ordinary way from the sand.

I'Ieretofore cast hinges have required fitting or drilling or separate parts added to complete them and make them work. I make a curved lugone at the top and one at the bottom, which are ofsufficient strength to hold thc weight of the door and play easily in the mortise which is between the arms which support the pintles on the door. rIhese lugs are uniformly curved on the inside, and ot' such length and curvature as to embrace the pintles at any angle to which the door may be swung.

The door is cast with one or more pintles or spindles to correspond with the curved lugs on the frame in number and location, and these pintles or spindles are attached to the door by arms of the same casting as the door at their tops and bottoms, the lower arm being cast with a groove on the under side,whieh leaves it about one-half the thickness of the upper arm, so as to allow the pintles or spindles,when the door is Vide open, to easily slip into the embrace of their counterparts,the curved lugs. In eases where the door cannot be thrown wide open the curved lugs may be reversed and the grooves on the lower arms of the pintles or spindles be placed on the outside, in which case the door can be hinged and unhinged (Model.)

when sluit by being lifted up. This change is so simple that it has not been thought import'ant to show it in the drawings.

The door in the construction shown in the drawings can be unhinged when standing wide open,as the points ofthe curved lugs will then slip over the lower arms of the pintles through the aforesaid grooves.

I will now describe my hinge, with reference to the accompanying drawings, which form part of this specification.

Figure l is a face view of my hinge attached to the frame and door, in which A is the frame, B, the door. a is the curved lug, and b b the arms of the spindles.

Fig. 2 is a sectional View of Fig. 1 at the line .fc Fig. 3 is a perspective view of my hinge, showing it attached to the door and frame as the door stands wide open, in which b shows the groove in the lower arm of each pintle through which the curved lug will slip as the door is placed upon its hinge or taken off the same.

The construction of my hinge is very simple and inexpensive. rIhe door and iuts part of the hinge are east in one piece, the lower arms of the pintles being grooved or cut away on the under side in casting, and the curved lugs are removed from the sand after the frame is removed in the ordinary way of casting.

Having thus described my invention, its manner of construction and operation, what I claim, and desire to obtain Letters Patent for, 1s-

In a hinge, the combination of the hooked lugs a c, formed upon the frame in casting without a core, and the piutle and its arms b b cast upon the door itself and furnished with groove b to allow it to pass within thehooked lugs, as shown and described, and for the purposes set forth.

DAVID K. JACKMAN.

fitnessesz F. W. PUGsLnY, K. J. LirwLoR. 

